Keyboard



FIG. 1 is a perspective view of the keyboard of the present invention wherein the broken lines are shown for environment only and form no part of the claimed design;

FIG. 2 is a top, front, and side perspective view thereof shown partially opened;

FIG. 3 is a top, front and side perspective view thereof shown in the closed position;

FIG. 4 is a front view thereof;

FIG. 5 is a rear view thereof;

FIGS. 6 and 7 are side views thereof;

FIG. 8 is a top view thereof; and,

FIG. 9 is a bottom view thereof. 

CLAIM The ornamental design for a keyboard, as shown and described. 